Wood-barking machine.



Patented Dec. 4, I900. J. H. BAKER, G. F. SHEVLIN &. F. H. BAKER.

WOOD BARKING MACHINE.

(Application filed. Jan. 31, 1900.) (No Model.)

UNITED STATES PATENT OFFICE.

JAMES H. BAKER, GEORGE F. SHEVLIN, AND FREDERICK I-I. BAKER, OF

SARATOGA SPRINGS, NEW YORK.

WOOD-BARKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 663,211, dated December 4, 1900.

. Application filedd'anuary 31, 1900. Serial No. 3,433- (No model.)

To all whom it may concern.-

Be it known that we, JAMES H. BAKER, GEORGE F. SHEVLIN, and FREDERICK H. BAKER, citizens of the United States, residing at Saratoga Springs, in the county of Saratoga and State of New York, have invented an Improvement in Wood-Barking Machines, of which the following is a specification.

In the preparation of woodpulp for the manufacture therefrom of paper the wood from spruce and poplar trees, usually employed, is cut up into lengths and the bark is removed therefrom preparatory to either cutting the pieces up into chips, which chips are afterward put into a digester and from which the wood-pulp is made, or for preparing the wood for the grinder.

Our invention relates to a machine for removing the bark from these pieces of Wood, and in such machines it is usual to provide a disk with radial knives and the piece or log of wood is supported onrollers while presented to the action of the knives.

Our present invention is designed, essentially, as an improvement upon the device shown and described in Letters Patent granted to us October 11, 1898, No. 612,227; and the object of the present invention is to make a more simple and effective device and one entirely hand controlled and adjusted.

Incarrying out our invention the toothed Wheels supporting the piece or log of wood to be barked are supported upon a sliding carriage moving over an inclined Way, and the carriage is vertically adjustable to accommodate the various sizes of the piece or log of wood, and the said carriage is held in place by a hand-operated bar and locking-pawl engaging a fixed rack, and the toothed wheels are operated by pulleys and a belt from the shaft of the revolving knife-disk, together with intermediate gears for reducing the speed and adjustable connections and a clutch for throwing the said parts into or out of ac= tion, so that the'rotation of the block of pulp- Wood may be arrested to shave off a knot or uneven surface or extra thickness of bark.

In the drawings, Figure 1 is an elevation representing our improvement. Fig. 2 is an elevation at the left-hand end of the parts shown in Fig. 1. Fig. 3 is a vertical crosssection and partial elevation at the line a: w of Fig. 1; and Fig. 4 is a section at y 3 of Fig. 3 through the slotted inclined way supporting the carriage and toothed Wheels and also showing the means for supporting and vertically adjusting the said carriage.

The frame a or bed is bolted to one side of the casing A of the barker, and in this casing A is a knife-disk on the shaft 0. The toothed wheels I) I), together with the upper surface of the frame a, as shown in Fig. 3, receive and support the block of pulp-wood to be barked. The inclined Way 0 is slotted vertically and connected to and supported from the frame a by bracket-arms 2, and the said inclined Way is made With a vertical slotted end 0', having racks 3 at each side of the slot in the part c. This end a is also connected to the bracketarms 2.

The sliding carriage cl, resting upon the inclined way a, is provided with bearings 4 for the shaft Z) of the toothed wheels I), and on the under surface of this carriage d is an ear 5,

passing through the slot of the inclined way. A link 6 is pivoted to the ear 5 at one end and to a vertically-slidable hand-operated bar f at the lower end, the bar f passing through the slot of the vertical end 0, and on the pivotal connection of the said link and bar are rollers 7, bearing upon the rear surface of the vertical end 0, and connected to the hand-actuated bar fis a locking-pawl 6, whose forked toothed end engages the teeth of the racks 3 upon the surface of the vertical end 0'.

Between the locking-pawl 6 on one side of the end 0 and the rollers bearing on the other side of the said part there is formed a lock ing-support, Which maintains the sliding carriage d and the toothed wheels I) in place. The release of the locking-pawl 6 and the raising or lowering of the parts by the handactuated bar fshifts the sliding carriage and the toothed Wheels up or .down upon the inclined way 0, so as to provide for smaller or larger blocks or logs of pulpwood, which blocks by preference rest. at one end against the ball or roller 8 on the stud r, and it will be noticed from Fig. 1 that the stud r and ball 3 rest in a socket r and that there are other sockets also upon the frame or into which the said stud may be placed, oranother stud and ball may be placed at the right-hand end of the frame, Fig. 1, so that a stud and ball come at either end of the log or block of pulpwood.

The shaft (7' of the toothed wheels is connected to a univeral joint g, longitudinally adjustable by the square or polygonal shaft on the one part, being movable longitudinally in the other tubular part. The universal joint is connected to a shaft h, having a bevel- Wheel 2', and a clutch 8 is also provided on this sh aft, the same being operated by a forked lever 9, the part operated by the lever moving upon a spline on the shaft h, and the other part of the clutch, together with the bevelwheel' 2', being loose upon the shaft. The frame a is bracketed and extended and is made with suitable bearings (shown in Fig. 1) for the shaft h, and the said bearings are connected by a. depending portion of the frame, to which the pivot of the clutch-lever 9 is connected, so that the spur-gear 7c is between the bracketed parts of the frame and the main portion of the frame in suitable bearings formed in the frame; but the details of this mechanism form no necessary part of our invention and may be altered or modified without departing therefrom.

The bevel-wheel t" is upon a short shaft,

also carrying the spur-Wheel k, and said spurwheel meshes with a pinionl upon a shaft a belt 10 passes around the pulleys 0 and m around the pulleys m and 0 and insure the transmission of the power necessary to operate the mechanism from the shaft of the knifedisk.

It will be noticed, especially from Figs. 1 and 3, as hereinbefore described, that the toothed wheels may be raised and lowered according to the size of the block or log of pulp-Wood, but that as these parts are raised or lowered the universal joint g accommodates-itself to the movement. It will also be noticed that the power communicated from the pulley 0 through the belt 10 to the pulley m and from the same through the pinionlto the spur-gear 7c and therefrom to the bevelwheel 'L is only operative when the parts of the clutch 8 are in engagement, because if the parts of the clutch 8 are separated the bevel-wheel 1', because of being loose, will rotate without turning the shaft h, the universal joint g, the toothed wheels I), and the block of pulp-wood, and that as soon as the parts of the clutch 8 are again connected the revolution of the said parts and the block of pulp-wood is continued. In this manner the block of pulp-wood is revolved, so that the bark is removed from the surface thereof, or the revolution is temporarily suspended,

so as to prolong the cutting action of the forth,

-whereby the carriage is supported and may be raised or lowered, substantially as set 2. In a barking-machine, the combination with the toothed wheels'supporting the block of pulp-wood, a shaft therefor and a sliding carriage supporting the said wheels and shaft,

carriage and over which the carriage is movable, an ear upon the under side of the carriage passing through the slot of the inclined way, a link connected to the said car, a guide, a vertically-slidable' hand-operated bar and means for connecting the bar to the said link and for holding the parts in position and supporting the carriage and wheels, substantially as set forth.

3. In a barking-machine, the combination j with the toothed wheels supporting the block which also carries the pulley m, and we pro vide an adjustable pulley nand another pulley 0 upon the shaft 0 of the knife-disk, and

of pulp-wood, a shaft therefor and a sliding carriage supporting the said wheels'and shaft, of an inclined slotted way supporting the said 3 carriage and over which the carriage is movand beneath the pulley n, the said pulley n being adjustable, so as to tighten the belt able, an earupon the under side of the carriage passing through the slot of the inclined way, a link connected to the said ear, a guide and a vertically-slidable hand-operated bar pivotally connected to the lower end of said link, rollers upon the said pivotal connection and bearings for the said rollers, a lockingpawl connectedto the said hand operated bar and racks engaged by the said lockingpawl, substantially as set forth.

4. In a barking-machine, the combination with theframe a, of a slotted inclined way 0, a slotted vertical end 0 formed as a continuation thereof, bracket-arm's 2 connected to the said parts and assisting in supporting the same. from the frame a, racks upon the surface of the vertical end a at opposite sides of the slot, toothed wheel's, a shaft therefor and a sliding carriage supporting the wheels and ing barked, an ear connected to the sliding carriage and passing through the slot of the inclined way, and vertically-slidable hando'perated devices connected to the said ear and adapted to engage opposite faces of the slotted vertical end 0 in supporting the toothedjwheels and sliding carriage, substantially as set forth.

5. In a barking-machine, the combination 7 with the framea, of a slotted inclined way 0,

' of an inclined slotted way supporting the said 'a slotted vertical end 0' formed as a continuation thereof, bracket-arms 2 connected to the said parts and assisting in supporting the same from the frame ct, racks upon the sur face of the vertical end 0 at opposite sides of the slot, toothed wheels, a shaft therefor and a sliding carriage supporting the wheels and shaft and moving upon the inclined way for supporting the block of pulp-Wood While being barked, an ear connected to the sliding carriage and passing through the slot of the inclined Way, a link 6 pivoted to the said ear, a vertically-slidablehand-operated bar f passing through the slot of the end 0' and pivoted to the lower end of the link, a locking-pawl JAMES H. BAKER. GEO. F. SHEVLIN. FREDERICK H. BAKER.

Witnesses:

GEORGE M. CRANE, JOHN L. THOMAS. 

